Complaints over time
Complaints about the 2009 Mack GU peaked in 2018, with 1 filed
Owner complaints about this model year, by the year they were filed with NHTSA.
Source: NHTSA ODI complaints file. The lighter column runs through October.
Model year
2009 Mack GU
Truck, diesel, built in United States. Owner complaints on file from Sep 18, 2018 to Sep 18, 2018.
Recall campaigns covering this model year7116k vehicles or units across those campaigns
Owner complaints1Below the median 2009 truck
Severity index0.02009 trucks average 8.2
First 24 months0Complaints in its first two years
Components
100% of complaints about the 2009 Mack GU name engine and cooling
Owner complaints by component. Hover or focus a bar for the crash, fire, injury or death count.
Source: NHTSA ODI complaints file. A complaint can name more than one component; it is counted under the first.
Recalls
7 recall campaigns cover the 2009 Mack GU
Check a specific vehicle by VIN on NHTSA's site: a campaign may cover only part of a model year's production.
| Campaign | Filed | Subject | Component | Vehicles | Remedy |
|---|---|---|---|---|---|
| 14V-208 | Apr 18, 2014 | Hazard warning lights may fail | Lighting | 44,047 | Part replacement |
| 14V-078 | Feb 21, 2014 | While continuing to research the scope of the issue, Mack expanded the recall on November 18, 2014 to include certain model year 2008-2009 and… | Electrical system | 70,208 | Part replacement |
| 12V-519 | Oct 18, 2012 | Control box may lose its electrical ground | Electrical system | 260 | Part replacement |
| 11V-292 | May 20, 2011 | As a result of the routing and clipping used, the battery cables may come into contact with frame hardware, which, as a result of chafing, may… | Electrical system | 771 | Part replacement |
| 10V-404 | Sep 7, 2010 | Actuation and release timing of the vehicles exceeds the limit which fails to conform to the requirements of federal motor vehicle safety standard… | Brakes | 369 | Repair or modification |
| 08V-331 | Jul 23, 2008 | Mack is recalling certain my 2009 trucks equipped with hella headlamps for failing to comply with the photometric output requirements of federal… | Lighting | 265 | Part replacement |
| 08V-177 | Apr 17, 2008 | Molded valve body has an incorrect core pin in the injection mold causing the valve body to be oversized in the double check valve area | Brakes | 66 | Part replacement |
Source: NHTSA ODI recalls file.
Owner complaints
What owners reported about the 2009 Mack GU
The full text of every complaint filed with NHTSA about this model year, newest first. Complaints are filed by owners and are not verified by NHTSA; NHTSA removes personal details before publishing.
1 complaint on file, page 1 of 1.
- Filed Sep 18, 2018Failure Sep 18, 201858,500 milesBoise, IDEngine
VEHICLE HAVING ELECTRICAL ISSUES, LIGHTS AND RADIO SHUTTING OFF AND EXHAUST ENGINE BREAK WORKING INTERMITTENTLY. HOOKED UP AND MOSTLY DATA LINK CODES. IC CLUSTER LIGHTS FLASH ON AND OFF WHILE HOOKED UP. FOUND ENGINE ECM FULL OF OIL ON BOTH A AND B CONNECTORS. OIL LEVEL SENSOR IS LEAKING WIC KING OIL UP TO ECM. WILL NEED ECM,HARNESS,OIL LEVEL, OIL PRESSURE SENSORS AND EGR VENTURI FRONT CAB MOUNTS ARE WORE CAUSING AIR CLEANER HEAT SHEILD TO RUB THOUGHT VALVE COVER. NEED TO REPAIR ENGINE BEFORE ANYMORE T/S.
NHTSA complaint 11130249
Source: NHTSA ODI complaints file.
Investigations
1 NHTSA investigation on file
- PE09010 Preliminary evaluation, Brakes
AIR BRAKE CONTROL VALVE
Opened Feb 13, 2009, closed Jun 18, 2009
Source: NHTSA ODI investigations file.
Service bulletins
170 manufacturer communications cover this model year
Technical service bulletins and other notices the manufacturer sent to dealers. A bulletin is not a recall; the 60 most recent are listed.
- CBR-2347 202402 Feb 16, 2024 · Service Bulletin/Repair Instructions
CBR - Active "Set Park Brake" Message On Drivers Information Display (DID). - CBR-202 202402 Feb 16, 2024 · Service Bulletin/Repair Instructions
CBR - Automated Manual Transmission ( AMT ) Flywheel Pilot Bearing Wear On Input Shaft. - CBR-2320 202312 Dec 1, 2023 · Service Bulletin/Repair Instructions
CBR: For vehicles equipped with an 11L engine, the plastic saddle bracket holding the a/c line on the left side of the engine may move excessively and rub the area where it secures the line. - M-465-001 202311 Nov 7, 2023 · Service Bulletin/Repair Instructions
TSB: Mack Trucks now offer an improved HD Inter-Axle Through Shaft for the CRD 125, 150, 180, and 200 family carriers. The new HD shaft went into production on January 23rd, 2023 for 2.54 - 3.50 axle ratios and April 1st, 2023 for 3.56 - 3.98 ratios. The ne… - M728-005A 202308 Aug 14, 2023 · Service Bulletin/Repair Instructions
TSB: Barksdale Leveling Valve, Leak Test - M-141-001 202308 Aug 18, 2023 · Service Bulletin/Repair Instructions
TSB: Air Restriction Indicator - KC-474-Ver5 May 2, 2023 · Service Bulletin/Repair Instructions
CBR: Diagnostic Trouble Code (DTC) P215A-64, Fault Code SPN 84 FMI 19 - KC-614-Ver4 May 24, 2023 · Service Bulletin/Repair Instructions
CBR: eWarranty To UCHP Labor Code ( SCC Code ) Crossover, Conversion Information For Use With Campaigns ( FI, PI ) And Recalls ( EC, SC ), Location On Trucks Dealer Portal ( TDP ) - M-170-003 Apr 18, 2023 · Service Bulletin/Repair Instructions
TSB: Vibration Diagnostics - M-170-001 Apr 18, 2023 · Service Bulletin/Repair Instructions
TSB: Stock Vehicle Storage and Maintenance - KC-2248 Feb 21, 2023 · Service Bulletin/Repair Instructions
Flywheel Housing Thread Repair - KC-395 Feb 8, 2023 · Service Bulletin/Repair Instructions
Instrument Cluster Programming - Programming Fails Or Errors Display When Replacing An Instrument Cluster With A Newer Part Number (Conversion Kit) - US04 To US10 Chassis (9-Pin Diagnostic Connector) - M-852-001 Dec 14, 2022 · Service Bulletin/Repair Instructions
2007 document reformatted to be published as a TSB in Impact. Lateral cab movement bracket. - M-728-001 Sep 22, 2022 · Service Bulletin/Repair Instructions
2008 Document reformatted to be published as a TSB in Impact. Air suspension ride height. - M-411-001 Sep 21, 2022 · Service Bulletin/Repair Instructions
2008 Document reformatted to be published as a TSB in Impact. Two-Piece clutch brake. - M-823-002 Sep 21, 2022 · Service Bulletin/Repair Instructions
2008 Document reformatted to be published as a TSB in Impact. Grille bar, replacment. - M-874-002 Sep 21, 2022 · Service Bulletin/Repair Instructions
2008 Document reformatted to be published as a TSB in Impact. HVAC fine particulate filter. - M-222-001 Sep 15, 2022 · Service Bulletin/Repair Instructions
2008 Document reformatted to be published as a TSB in Impact. Loose oil filter spud. - M-260-001 Sep 15, 2022 · Service Bulletin/Repair Instructions
2008 Document reformatted to be published as a TSB in Impact. Cooling system connections. - M-801-001 Sep 15, 2022 · Service Bulletin/Repair Instructions
2008 Document reformatted to be published as a TSB in Impact. Paint protection. - M-652-002 Sep 15, 2022 · Service Bulletin/Repair Instructions
2008 Document reformated to be published as a TSB in Impact. Torque rod interference. - M-823-001 Sep 15, 2022 · Service Bulletin/Repair Instructions
2008 Document reformated to be published as a TSB in Impact. Field repair for installing the grill. - M-374-001 Sep 15, 2022 · Service Bulletin/Repair Instructions
2008 Document reformated to be published as a TSB in Impact. Revised battery ti battery cable - M-265-002 Sep 22, 2022 · Service Bulletin/Repair Instructions
TSB-Charge Air Cooler t-clamp install. - M-255-016 Aug 19, 2022 · Service Bulletin/Repair Instructions
2009 Document reformatted to be published as a TSB in Impact. Turbo Actuator Connector Repair. - M-561-002 Aug 6, 2022 · Service Bulletin/Repair Instructions
2009 Document reformatted to be published as a TSB in Impact. New Air Dryer - M-451-002 Aug 6, 2022 · Service Bulletin/Repair Instructions
2009 Document reformatted to be published as a TSB in Impact. Axle Carrier Pinion Angles - M-372-001 Aug 6, 2022 · Service Bulletin/Repair Instructions
2009 Document reformatted to be published as a TSB in Impact. Daytime Running Lamp (DRL) Relay Block - M-258-001 Jun 30, 2022 · Service Bulletin/Repair Instructions
2008 document reformated to be published as a TSB in Impact. All CXU, CHU, GU, MRU's built with Volvo Engines and 07 Emissions. Cleaning Aftertreatment Fuel Injectors. - M-263-002 Jun 30, 2022 · Service Bulletin/Repair Instructions
2008 document reformatted to be published as a TSB in Impact. Fan Ring clearance for GU Model Truck. - KC-2112 Jun 21, 2022 · Service Bulletin/Repair Instructions
Programming Failure - Chassis With Cummins Engine And An Allison Transmission - KC-2143 Jun 21, 2022 · Service Bulletin/Repair Instructions
(Back Office) - Cruise Control Inoperative After Updating Software VECU5 Without ESP Package (UESP). - KC-405 Jun 21, 2022 · Service Bulletin/Repair Instructions
Warranty Automated Manual Transmission ( AMT, I-Shift, mDrive ) Control Housing Assembly; Guidelines For Filing A Claim For Chassis Return Visit With Transmission Issues After A Repair Requiring Control Housing Removal And Reinstallation - US07 And N. - KC-745 Jun 22, 2022 · Service Bulletin/Repair Instructions
Automated Manual Transmission ( AMT ) I-Shift / mDRIVE - Ribbon Harness Replacement - Speed Sensor Bolts, Possible Fault Codes P1058 - 21 Or MID 130 PID 161 FMI 1 - KC-750 Jun 28, 2022 · Service Bulletin/Repair Instructions
US10 Emission Engines - Diagnostic Trouble Code ( DTC ) SPN 1231 FMI 9 Troubleshooting. - KC-663 May 18, 2022 · Service Bulletin/Repair Instructions
Emcon (Spark Assist) Engine Aftertreatment System Troubleshooting Check Sheet - US07 Emissions - KC-653 May 17, 2022 · Service Bulletin/Repair Instructions
Low Oil Pressure Diagnostic Process For 11 Liter Engines - KC-644 May 17, 2022 · Service Bulletin/Repair Instructions
Manual Compression Test Adapter For Engines With Stainless Steel Injector Sleeves (Conical Tip Injectors) - US07 And Newer Emissions, Model Year 2008 And Newer - KC-630 May 9, 2022 · Service Bulletin/Repair Instructions
Sensor And Parameter Value Monitor - Template Parameter List For Pre-OBD (9-Pin Diagnostic Connector) Chassis In Premium Tech Tool ( PTT ); Regeneration And Road Test Sensor Monitor Parameters - US07 And US10 Emissions, Model Years 2008 To 2013 - KC-627 May 9, 2022 · Service Bulletin/Repair Instructions
Premium Tech Tool ( PTT ) Training Materials And Support Tools - KC-2172 May 16, 2022 · Service Bulletin/Repair Instructions
No Start Condition After Over The Air Programing - VECU5 No Start "Safe State" - KC-2171 May 26, 2022 · Service Bulletin/Repair Instructions
Temperature Sensor Troubleshooting Guide - US10+OBD13 And Newer - KC-2170 May 16, 2022 · Service Bulletin/Repair Instructions
Electronically Controlled Suspension (ECS) Losing Air Pressure - KC-2169 May 16, 2022 · Service Bulletin/Repair Instructions
Low Voltage Disconnect (LVD), Function Description - KC-2165 May 26, 2022 · Service Bulletin/Repair Instructions
DEF Pump Troubleshooting Guide - US10+OBD13 And Newer Emissions - KC-2161 May 13, 2022 · Service Bulletin/Repair Instructions
DEF Pump Cycling periodically Hours After Key Off - KC-2158 May 26, 2022 · Service Bulletin/Repair Instructions
Selective Catalytic Reduction (SCR) Muffler Troubleshooting Guide - US10+OBD13 And Newer Emissions - KC-2131 May 26, 2022 · Service Bulletin/Repair Instructions
USE FOR NEW VEHICLES (US21+OBD22 Emissions) - Intermittent Diagnostic Trouble Codes U02A3, U029D, U029E - KC-2116 May 26, 2022 · Service Bulletin/Repair Instructions
NOx Sensor Troubleshooting Guide - US10+OBD13 And Newer Emissions - KC-626 May 9, 2022 · Service Bulletin/Repair Instructions
Mack Chassis - Vehicles Equipped With An Automated Manual Transmission Model F ( AMT-F, mDrive ), Premium Tech Tool ( PTT ) Gearbox Calibration Failure; Gearbox Calibration Operation Stops And Fails At 33% When Run With Transmission Removed - KC-633 May 13, 2022 · Service Bulletin/Repair Instructions
Mack Chassis - Front Hub With Unit-Bearings ( Unitized Wheel Bearings ), Inspection Information And Guidelines - Commonly Model Year 2008 And Newer - KC-648 May 17, 2022 · Service Bulletin/Repair Instructions
Mack - PTO Pump Speed Calculator - KC-686 May 20, 2022 · Service Bulletin/Repair Instructions
(Back Office Only) Mack Chassis - Cruise Control Inoperative After Disabling The Electronic Stability Program (ESP) - KC-698 May 24, 2022 · Service Bulletin/Repair Instructions
Mack Chassis - Diesel Exhaust Fluid ( DEF ) System Cleaning/Flush After DEF Pump Failure Or System Contamination - KC-699 May 24, 2022 · Service Bulletin/Repair Instructions
Mack Chassis - Bendix Vendor Configuration Program ( VCP ) Software Download Information - KC-714 May 25, 2022 · Service Bulletin/Repair Instructions
Mack Chassis - Diagnostic Trouble Codes ( DTC's ) - P020113, P020213, P020313, P020413, P020513, P020613, Cylinders 1 Through 6 Injector A Open Circuit - KC-916 May 3, 2022 · Service Bulletin/Repair Instructions
Mack Chassis - Replacement / Upgrade Of The Programmable Global Audio ( GLAD ) Radio With A Non-programmable Radio - KC-257 Mar 18, 2022 · Service Bulletin/Repair Instructions
Volvo Chassis - FSB 237 - 020, Unit Injector Yoke Hold - Down Bolt Torque Specification - KC-529 Feb 21, 2022 · Service Bulletin/Repair Instructions
System Date And Time, Information; Diagnostic Tool ( J-Pro, Premium Tech Tool ( PTT ) ) Displays Incorrect Timestamp For Diagnostic Trouble Code ( DTC ) / Fault Code Occurrences, Possible Data Link Codes Present - US07 And Newer Emissions, Common Mod - KC-286 Dec 21, 2021 · Service Bulletin/Repair Instructions
Mack Chassis - FSB 563-008 Plugs, Pressure Protection Manifold - New Brass Plugs For Noregon Pressure Protection Manifold (PPM)
Source: NHTSA manufacturer communications files.